GEMOLOGICAL TEST CERTIFICATE
  REPORT NO : JBNGTL/3652/19  
  Colour:     Brown 
  Weight:     4.38 cts 
  Shape Cut:     Pear Cabochon 
  Transparency:     Opaque 
  Optic Character:     SR 
  RI:     1.45 
  Hardness:     6 
  Characteristics:      
  Observation:     Natural Opal 
  Remarks:     Size:- 16.30x8.00x6.85mm